From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-4.2 required=3.0 tests=AWL,BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 1ED7F1F453 for ; Tue, 12 Feb 2019 19:43:16 +0000 (UTC) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:date:message-id; q=dns; s= default; b=V3AFC1XZIxb/IRgHEssUZupQCaB4wbTeto4E4KpGlnVHqacIPG+3b UHrevjjf0dqV0h7IBkNomf45fd7mwOd897ZMgYGnlQuYq9BU1sx3V9YEjkVqytI4 nDGGgW9O5gEYVRUlOa1Nwv1PozA+RnS820WQ7dszwuo/brG93Q+DBQ= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:date:message-id; s=default; bh=f2ZqQxQaJfSHwpjWBxeo8xwRL0U=; b=xaozlSL+a4QFfI8jYCi7Rkshpq4K mXAdUyYbsO6UNL0OjyX5Htv3eLvfxAmVjrnq8ZrvH5lCPvUMzQ8ww+KJhKH0emwB 2A1DFrzTnBQsVv0gcJkBEda19wfTAPOmHrWAiarcvNTsz0hSyV1vWe+tbieW3K6d gK07/WJz5dgNPoU= Received: (qmail 58974 invoked by alias); 12 Feb 2019 19:43:13 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Received: (qmail 58961 invoked by uid 89); 12 Feb 2019 19:43:13 -0000 Authentication-Results: sourceware.org; auth=none X-HELO: mail.efficios.com DKIM-Filter: OpenDKIM Filter v2.10.3 mail.efficios.com 33B141A1AE0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=efficios.com; s=default; t=1550000589; bh=d9UxErPSDdYyMoIrOcaXE5o07miqPeJJearAkalaofk=; h=From:To:Date:Message-Id; b=RHV2t1/cyfj7QAYYzu/I9AcV9TQbrWhEtFZgES1mi09ItAivCn1wNY4TQS4bPCnTP L0w1yX30BNFVXUgDp9wrTR7hqoxFqmNGUEQ6RHAmP+VgmqXVSchB93ZdJHB9riVre7 7gU0oYGQJJl6Z2nM4B2f4zcgamJr8pzTiU6w0AgbYzE0qBuuhVHxVRYy/IdzdOOLDI sdjny13THzGyeeSvc07aoAFiPkIODi6Fm4tZhYP0m3u3sN/gs1JBBuELrRq8+iUbHS 37yk5YxuPH1587I3+QW+qhoi3WAe2yPbVcrltbIxRdjGELbzImyA6HQ8k9Rm/YRXns VgmfJaGZnDwCg== From: Mathieu Desnoyers To: Carlos O'Donell Cc: Florian Weimer , Joseph Myers , Szabolcs Nagy , libc-alpha@sourceware.org, Mathieu Desnoyers Subject: [PATCH 0/4] Restartable Sequences support for glibc 2.30 Date: Tue, 12 Feb 2019 14:42:49 -0500 Message-Id: <20190212194253.1951-1-mathieu.desnoyers@efficios.com> Hi, This patchset implements basic support for the "rseq" Linux system call in glibc by registering the rseq TLS abi. One patch in this series modifies sched_getcpu() to speed up reading the current CPU number by reading __rseq_abi.cpu_id when rseq is available. The only point that still appears to not reach concensus is whether it's acceptable to define the RSEQ_SIG code signature for each architecture. If I missed other points that failed to reach concensus, please let me know! Please consider for inclusion into glibc, Thanks, Mathieu Mathieu Desnoyers (4): glibc: Perform rseq(2) registration at C startup and thread creation (v7) glibc: sched_getcpu(): use rseq cpu_id TLS on Linux support record failure: allow use from constructor rseq registration tests (v2) NEWS | 11 + csu/libc-start.c | 12 +- misc/Makefile | 3 +- misc/rseq-internal.h | 34 ++ nptl/pthread_create.c | 9 + support/check.h | 4 + support/support_record_failure.c | 18 +- sysdeps/unix/sysv/linux/Makefile | 8 +- sysdeps/unix/sysv/linux/Versions | 4 + sysdeps/unix/sysv/linux/aarch64/bits/rseq.h | 24 ++ sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 + sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 + sysdeps/unix/sysv/linux/arm/bits/rseq.h | 24 ++ sysdeps/unix/sysv/linux/arm/libc.abilist | 2 + sysdeps/unix/sysv/linux/bits/rseq.h | 24 ++ sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 + sysdeps/unix/sysv/linux/i386/libc.abilist | 2 + sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 + .../sysv/linux/m68k/coldfire/libc.abilist | 2 + .../unix/sysv/linux/m68k/m680x0/libc.abilist | 2 + .../unix/sysv/linux/microblaze/libc.abilist | 2 + sysdeps/unix/sysv/linux/mips/bits/rseq.h | 24 ++ .../sysv/linux/mips/mips32/fpu/libc.abilist | 2 + .../sysv/linux/mips/mips32/nofpu/libc.abilist | 2 + .../sysv/linux/mips/mips64/n32/libc.abilist | 2 + .../sysv/linux/mips/mips64/n64/libc.abilist | 2 + sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 + sysdeps/unix/sysv/linux/powerpc/bits/rseq.h | 24 ++ .../linux/powerpc/powerpc32/fpu/libc.abilist | 2 + .../powerpc/powerpc32/nofpu/libc.abilist | 2 + .../linux/powerpc/powerpc64/be/libc.abilist | 2 + .../linux/powerpc/powerpc64/le/libc.abilist | 2 + .../unix/sysv/linux/riscv/rv64/libc.abilist | 2 + sysdeps/unix/sysv/linux/rseq-internal.h | 91 +++++ sysdeps/unix/sysv/linux/rseq-sym.c | 54 +++ sysdeps/unix/sysv/linux/s390/bits/rseq.h | 24 ++ .../unix/sysv/linux/s390/s390-32/libc.abilist | 2 + .../unix/sysv/linux/s390/s390-64/libc.abilist | 2 + sysdeps/unix/sysv/linux/sched_getcpu.c | 25 +- sysdeps/unix/sysv/linux/sh/libc.abilist | 2 + .../sysv/linux/sparc/sparc32/libc.abilist | 2 + .../sysv/linux/sparc/sparc64/libc.abilist | 2 + sysdeps/unix/sysv/linux/sys/rseq.h | 65 +++ sysdeps/unix/sysv/linux/tst-rseq-nptl.c | 381 ++++++++++++++++++ sysdeps/unix/sysv/linux/tst-rseq.c | 110 +++++ sysdeps/unix/sysv/linux/x86/bits/rseq.h | 24 ++ .../unix/sysv/linux/x86_64/64/libc.abilist | 2 + .../unix/sysv/linux/x86_64/x32/libc.abilist | 2 + 48 files changed, 1034 insertions(+), 15 deletions(-) create mode 100644 misc/rseq-internal.h create mode 100644 sysdeps/unix/sysv/linux/aarch64/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/arm/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/mips/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/powerpc/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/rseq-internal.h create mode 100644 sysdeps/unix/sysv/linux/rseq-sym.c create mode 100644 sysdeps/unix/sysv/linux/s390/bits/rseq.h create mode 100644 sysdeps/unix/sysv/linux/sys/rseq.h create mode 100644 sysdeps/unix/sysv/linux/tst-rseq-nptl.c create mode 100644 sysdeps/unix/sysv/linux/tst-rseq.c create mode 100644 sysdeps/unix/sysv/linux/x86/bits/rseq.h -- 2.17.1